Our take: The CYMA V3 gearbox is a complete drop-in gearbox solution for those who are looking for a powerful, durable yet economical complete V3 full metal gearbox, ready to go/install right out of the box. This is the standard V3 that goes into all of the newest CYMA high-powered AK47s, and is solidly built.
This V3 gearbox comes complete with high-performance upgrades including more durable bushings, an M115 spring, a reinforced set of metal gears, factory-spec mechanical lubrication, and a high-torque motor attached to power this beast. Ultimately, it's a premium-grade drop in V3 metal gearbox in every way, EXCEPT it's priced right at a low, unbeatable price.
Note: Ready to use right out of the box, though professional installation is recommended/ may be required.